anagrams of catchphrases/advertising slogans

[Foxy-Lady]

24 flinty ground northeast
27 mythologist was unmatched
33 skim on appetizers
28 five historians stilled
many thanks for any help x

[Fibonacci]

33 points make prizes

[Mancunian]

28 I've started so I'll finish

[Foxy-Lady]

thank you both x

[katburd]

I'll try giving really easy clues on the others for you:
24] used in a speech by Margaret Thatcher
27] it's an advert, and it's cold
do hope you can get your answers from these clues :)

[Foxy-Lady]

thank you katburd solved 24 but still struggling with 27 x

[Pea Pod]

Kerry Katona was sacked.

[katburd]

peapod gave you a good clue, if you still don't get it try to focus on frozen foods and busy mothers, I'm sure you'll work it out now :)

[mike11111]

That's why mums go to Iceland? (or words to that effect)